Screen saver is to protect the screen from electron that jumpsin high speed because of the magnetic and electric field effect inside the monitor tube.

3. Name and explain briefly the device that can enhance the picture quality in monitor!

VGA card (a graphic card)

AGP (accelerated graphic port)

PCI Express

4. What is the advantage of managing file ?-serves to set the file so neat and uncluttered-if there are too many file in the computer,it will be hard to search or to identifi those files. therefore,it is important to organize files in the computer,by using the file manager

5. How to cancel a deletion in the Recycle Bin ?

Choose the Recycle Bin icon on the Folder panel

Chose the file or folder to cancel the delection.

Next, from the menu abobe choose Restore this item or by right clicking the file, choose Restore.

6. Name and explain briefly about the the control size buttons !

Add Hardware =>To install hardwares that do not support plug and play.

Autoplay => To run an application from CD, DVD, or flash disk that is inserted to a computer.

Date and Time => To set the date and time on a computer.

Device Manager => To set the connected hardwares on he computer.

Folder Optons => To adjust te appearance of a folder.

Fonts => To set the installed fonts on a computer.

Game Controllers => To set a joystick.

Internet Options => To set the Internet Explorer application.

Keyboard => To set a keyboard.

Mouse => To set a mouse.

Personalization => To set the screen or desktop.

7. What is the Print Preview icon for ?Seeingthe lookof thedocumentthatwillbe in print

8. What icon is used for writing mathematical equations or formulas ?
Equation tools

9. Describe the steps to create page numbers !

Click the Insert tab.

Click Page Numbers until the page number location option appears.

From those options, we determine the page number position, for example to put the page number on the bottom of the page, choose the Bottom of Page (Footer). Then, choose the preferred format.

To set the number format, click the Insert tab then click Page Numbers then choose the Format Page Number icon until the Page Number Format dialog box appears.

To choose the numbering format, click the arrow below the Number Format and set the numbering format.

Click the OK button to close the Page Number Format dialog box.

Click OK to finish the page number and its format setting.

10. how to set a distance among sentences ?

Select the text to be set.

Click on the Home tab, choose the dialog box launcher on the Font group to show the Font diaolog box.